I recently to wikidot's fairfield project website. It looks pretty similar to SCP Foundation, but just articles that i don't understand what they are all about. I'm planning to give up to SCP Foundation because i cannot understand many things here and go to Fairfield Porject instead. Well, which one is better? Anybody?

Ah, a repository for Delta Green material. Looks good. No idea what you would consider better; they're not exactly comparable. One is a wiki providing material for a tabletop roleplaying game, the other is a cooperative fiction writing wiki.